Product injection mold with lifting handle

Abstract

The utility model provides a product injection mold with a handle, which comprises a front mold, a front mold core, a rear mold, a rear mold core, a front insert and a handle forming mechanism, the handle forming mechanism comprises a main sliding block, a secondary sliding block, a first forming block and a second forming block, the main sliding block can be assembled on the rear mold in a lateral sliding manner, and the secondary sliding block can be assembled on the rear mold in a lateral sliding manner. The secondary sliding block is assembled on the main sliding block in a lateral sliding mode, the first forming block is assembled on the main sliding block in a front-back sliding mode and extends into the injection molding cavity, the second forming block is fixedly connected with the secondary sliding block and extends into the injection molding cavity, and the front side face of the first forming block is provided with a bent arc face. A handle forming cavity is defined by the bent cambered surface, the front insert and the front mold core; the second forming block is located on the rear side of the first forming block and is in inclined guide fit with the first forming block. And the mold can be used for molding products with handles and realizing lossless demolding.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to a product injection mold with a handle. Background Technology

[0002] like Figure 1 Product 1 shown has a suspended handle 2, with a gripping cavity 3 formed between the handle 2 and the surface of product 1 to allow for hand gripping. The gripping cavity 3 has a front opening 4 and a side opening 5, and is not a concentric arc structure. When product 1 is molded using an injection mold, if an arc-shaped core-pulling method (refer to the core-pulling method disclosed in CN221022201U) is used to pull the product out from the gripping cavity 3, it will scratch or even break the product itself. Therefore, an arc-shaped core-pulling method cannot be used to pull the product out from the gripping cavity 3. Based on this, a new injection mold needs to be designed to ensure the quality of product demolding. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a product injection mold with a handle.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A product injection mold with a handle includes a front mold, a front mold core mounted on the front mold, a rear mold, and a rear mold core mounted on the rear mold. The front mold core and the rear mold core form an injection cavity when the mold is closed. The mold also includes a front insert mounted on the front mold core and inserted into the injection cavity, and a handle forming mechanism mounted on the rear mold. The handle forming mechanism includes a main slider, a secondary slider, a first forming block, and a second forming block. The main slider is laterally slidably mounted on the rear mold, the secondary slider is laterally slidably mounted on the main slider, and the first forming block is slidable back and forth. The first molding block is mounted on the main slider and extends into the injection cavity. The second molding block is fixedly connected to the secondary slider and extends into the injection cavity. The front side of the first molding block forms an arc-shaped portion, which, together with the front insert and the front mold core, forms a handle molding cavity. The second molding block is located behind the first molding block and forms an oblique guide fit with the first molding block. The second molding block drives the first molding block to move backward as the secondary slider moves laterally outward. The first molding block, the second molding block, and the front insert together constitute the gripping cavity between the handle and the side of the product.

[0006] Furthermore, the rear side of the first molding block is provided with an inclined limiting boss, and the front side of the second molding block is provided with an inclined limiting groove. The limiting boss is engaged in the limiting groove so that the first molding block and the second molding block form an oblique guide engagement.

[0007] Furthermore, in the mold-closed state, both the first molding block and the second molding block abut against the outer surface of the front insert.

[0008] Furthermore, the outer side of the front insert is provided with a positioning step, and the front side of the first molded block also abuts against the positioning step of the front insert.

[0009] Furthermore, the front mold is provided with a shovel base, and the shovel base forms an oblique guide engagement with the secondary slider. The separation of the front mold and the rear mold is achieved by the shovel base driving the secondary slider to move outward relative to the main slider.

[0010] Furthermore, a driving device is also assembled on the outer end of the rear mold, and the driving device drives the main slider to move laterally.

[0011] Furthermore, the driving device is a cylinder, a hydraulic cylinder, or an electric push rod.

[0012] Furthermore, the main slider has a receiving groove, and the secondary slider, the first forming block and the second forming block are all received in the receiving groove. The first forming block is located inside the secondary slider, and a connecting plate is provided between the secondary slider and the first forming block. The two ends of the connecting plate are respectively fixed to the two side walls of the receiving groove of the main slider. The first forming block and the connecting plate form a limiting fit that can slide back and forth.

[0013] Furthermore, the outer side of the first molding block is provided with a slot extending forward and backward, and the connecting plate is provided with a connecting boss, which is assembled into the slot.

[0014] The technical solution provided by this utility model has the following beneficial effects:

[0015] The curved surface of the first molding block, the front insert, and the front mold core together form the handle molding cavity for injection molding the handle. The first molding block, the second molding block, and the front insert together constitute the gripping cavity between the handle and the side of the product. During demolding, the separation of the front mold and the rear mold allows the front insert to be pulled out directly from the front opening of the gripping cavity. The outward sliding of the secondary slider relative to the main slider causes the second molding block to be pulled outward. At the same time, the outward pulling of the second molding block causes the first molding block to move backward, thereby causing the first molding block to detach from the handle until it is completely within the lateral opening range of the gripping cavity. Finally, by pulling the main slider outward, the first and second molding blocks are pulled out from the lateral opening of the gripping cavity, achieving non-destructive core pulling and ensuring the integrity of the product. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic of the product structure with a handle.

[0017] Figure 2The figure shown is a cross-sectional view of the product injection mold with handle in the embodiment;

[0018] Figure 3 As shown Figure 2 Enlarged view of region A in the middle;

[0019] Figure 4 The diagram shown is a partial structural schematic of the product injection mold with a handle in the embodiment.

[0020] Figure 5 As shown Figure 4 An exploded view of the structure shown;

[0021] Figure 6 The diagram shown is a structural schematic of the first molding block in the embodiment. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] In the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] This embodiment provides a product injection mold with a handle, used for injection molding such as... Figure 1 The product shown. For details, please refer to... Figures 2 to 6 As shown, the injection mold includes a front mold 11, a front mold core 13 mounted on the front mold 11, a rear mold 12, and a rear mold core 14 mounted on the rear mold 12. The front mold core 13 and the rear mold core 14 form an injection cavity 101 when the mold is closed. Specifically, for ease of explanation, the direction of mold opening and closing movement of the front mold 11 and the rear mold 12 is defined as the front-back direction, and the direction perpendicular to the front-back direction is defined as the lateral direction. At the same time, the direction in which a component faces the injection cavity 101 is defined as inward, and the direction away from the injection cavity 101 is defined as outward.

[0026] Furthermore, it also includes a front insert 15 disposed on the front mold core 13 and inserted into the injection cavity 101, and a handle forming mechanism 20 disposed on the rear mold 12. The handle forming mechanism 20 includes a main slider 21, a secondary slider 22, a first forming block 23, and a second forming block 24. The main slider 21 is laterally slidably mounted on the rear mold 12, the secondary slider 22 is laterally slidably mounted on the main slider 21, the first forming block 23 is slidably mounted on the main slider 21 and extends into the injection cavity 101, and the second forming block 24 is fixedly connected to the secondary slider 22 and extends into the injection cavity 101. The front side of the first forming block 23 has a curved surface 231, and the curved surface 231, together with the front insert 15 and the front mold core 13, forms a handle forming cavity 102. Specifically, the handle forming cavity 102 is a part of the injection cavity 101 and is used for molding. Figure 1 The handle 2 is formed by the curved surface 231 of the first molding block 23, which forms the inner curved surface of the handle 2 facing the gripping cavity 3. The second molding block 24 is located behind the first molding block 23 and forms an oblique guide fit with the first molding block 23. As the second molding block 24 moves laterally outward (relative to the main slider 21), it drives the first molding block 23 to move backward (relative to the main slider 21); similarly, as the second molding block 24 moves laterally inward (relative to the main slider 21), it drives the first molding block 23 to move forward (relative to the main slider 21). The first molding block 23, the second molding block 24, and the front insert 15 together constitute the gripping cavity 3 between the handle 2 and the side of the product 1; that is, the part where the first molding block 23, the second molding block 24, and the front insert 15 are spliced ​​will not be filled, forming the gripping cavity 3 of the product 1.

[0027] After the product is injection molded, the front mold 11 and the rear mold 12 begin to open. The separation of the front mold 11 and the rear mold 12 allows the front insert 15 to be directly pulled out from the front opening 4 of the gripping cavity 3. The outward sliding of the secondary slider 22 relative to the main slider 21 drives the second molding block 24 to be pulled out. At the same time, the outward pulling of the second molding block 24 drives the first molding block 23 to move backward, so that the first molding block 23 is disengaged from the handle 2 until it is completely within the range of the side opening 5 of the gripping cavity 3. Finally, by pulling the main slider 21 outward, the first molding block 23 and the second molding block 24 are pulled out from the side opening 5 of the gripping cavity 3, achieving core pulling without damage and ensuring the integrity of the product.

[0028] The rear side of the first molding block 23 is provided with an inclined limiting boss 232, which is a "T"-shaped boss in this embodiment. The front side of the second molding block 24 is provided with an inclined limiting groove 241, which is also a "T"-shaped groove in this embodiment. The limiting boss 232 fits into the limiting groove 241, so that the first molding block 23 and the second molding block 24 form an oblique guide fit. This configuration results in a simple structure and stable operation.

[0029] In the mold-closed state, both the first molding block 23 and the second molding block 24 abut against the outer surface of the front insert 15, forming a limit and indicating that the mold is closed. Furthermore, the outer side of the front insert 15 is provided with a positioning step 151, and the front side of the first molding block 23 also abuts against the positioning step 151 of the front insert 15; the positioning effect is better, which is more conducive to the molding of the product.

[0030] The front mold 11 is provided with a shovel base 16, which forms an oblique guide engagement with the secondary slider 22. The separation of the front mold 11 and the rear mold 12 is achieved by the shovel base 16 driving the secondary slider 22 to move outward relative to the main slider 21. That is, when the front mold 11 and the rear mold 12 open, the secondary slider 22 moves relative to the main slider 21 simultaneously, thereby driving the first forming block 23 and the second forming block 24 to move. No other equipment is required for driving, resulting in a simple structure and low cost. Of course, in other embodiments, the movement of the secondary slider 22 can be driven independently by other driving equipment.

[0031] The outer end of the rear mold 12 is also equipped with a drive device 30, which drives the main slider 21 to move laterally; that is, the lateral movement of the main slider 21 is driven by a separate drive device 30. Specifically, the drive device 30 can be a cylinder, hydraulic cylinder or electric push rod, etc., in the prior art.

[0032] The main slider 21 has a receiving groove 211, in which the secondary slider 22, the first forming block 23, and the second forming block 24 are all received. The first forming block 23 is located inside the secondary slider 22. A connecting plate 25 is provided between the secondary slider 22 and the first forming block 23. The two ends of the connecting plate 25 are respectively fixed to the two side walls of the receiving groove 211 of the main slider 21. The first forming block 23 and the connecting plate 25 form a sliding limit fit, thus achieving a compact assembly of the handle forming mechanism 20. Furthermore, the outer side of the first forming block 23 is provided with a front-to-back extending slot 233, which is a "T"-shaped slot in this embodiment. The connecting plate 25 is provided with a connecting boss 251, which is also a "T"-shaped boss in this embodiment. The connecting boss 251 is assembled into the slot 233, thereby realizing the front-to-back movement of the first forming block 23 relative to the main slider 21. Of course, other embodiments are not limited to this.

[0033] Furthermore, in this embodiment, the product 1 has two handles 2, which are located on opposite sides of the product 1 respectively; similarly, the number of mating groups of the front insert 15 and the handle forming mechanism 20 is also two, which are distributed on opposite sides of the rear mold core 14.

[0034] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A product injection mold with a handle, comprising a front mold, a front mold core mounted on the front mold, a back mold and a back mold core mounted on the back mold, the front mold core and the back mold core constituting an injection cavity when the mold is closed; characterized in that: The front insert is arranged on the front mold core and inserted into the injection cavity, and the handle forming mechanism is arranged on the rear mold, and the handle forming mechanism comprises a main slider, a secondary slider, a first forming block and a second forming block, the main slider is laterally slidably arranged on the rear mold, the secondary slider is laterally slidably arranged on the main slider, the first forming block is forwardly and backwardly slidably arranged on the main slider and extends into the injection cavity, the second forming block is fixedly connected with the secondary slider and extends into the injection cavity, the front side of the first forming block is provided with a curved surface, and the curved surface, the front insert and the front mold core jointly form a handle forming cavity.

2. The handled product injection mold of claim 1, wherein: The rear side of the first forming block is provided with an inclined limiting boss, the front side of the second forming block is provided with an inclined limiting groove, and the limiting boss is matched in the limiting groove to form an inclined guide cooperation between the first forming block and the second forming block.

3. The handled product injection mold of claim 1, wherein: In the mold closing state, the first forming block and the second forming block abut on the outer side of the front insert.

4. The handled product injection mold of claim 3, wherein: The outer side of the front insert is provided with a positioning step, and the front side of the first forming block further abuts on the positioning step of the front insert.

5. The handled product injection mold of claim 1, wherein: The front mold is provided with a shovel base, and the shovel base forms an inclined guide cooperation with the secondary slider, and the separation of the front mold and the rear mold drives the secondary slider to move outward relative to the main slider through the shovel base.

6. The handled product injection mold of claim 1, wherein: The outer side end of the rear mold is further provided with a driving device, and the driving device is drivingly connected with the main slider to drive the main slider to move laterally.

7. The handled product injection mold of claim 6, wherein: The driving device is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

8. The handled product injection mold of claim 1, wherein: The main slider is provided with a containing groove, the secondary slider, the first forming block and the second forming block are contained in the containing groove, the first forming block is located on the inner side of the secondary slider, a connecting plate is arranged between the secondary slider and the first forming block, both ends of the connecting plate are fixed on the two side walls of the containing groove of the main slider, and the first forming block and the connecting plate form a forward and backward sliding limiting cooperation.

9. The handled product injection mold of claim 8, wherein: The outer side of the first forming block is provided with a front and rear extending clamping groove, and the connecting plate is provided with a connecting boss and is arranged in the clamping groove.

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